I have some compatibility issues: I need help understanding craftsman

I have had 3 Overhead Door "Legacy" openers working for about 20 years.  One just quit on me and I bought a Craftsman Assurelink 1/2 HP Model 139.54985 to replace the one that quit.  I suspect this was a mistake because of the following:

Years ago I had installed three momentary contact switches to open/close the garage doors from inside the house.  Essentially these are "door bell" switches. They all worked just fine with the Overhead Door openers.  

The Overhead Door supplied wall switches were mounted on the inside wall of the garage as per normal.

Our Toyota's were hooked up via Homelink and it all worked just fine.

All fine and good but then.. I installed the aforementioned Craftsman Assurelink. 

I got the Craftsman working:  It works with it's wall mounted switch.  It works with its remote (Model 41A7633) and I got it working with the Homelink in the Toyotas. 
 
BUT... it will not work with my momentary contact switches inside the house.  Does anyone have any idea how I can get this to work?

I think you'll find that those old door bell type of buttons won't work on most operators on the market today. The electronics and circuits in the newer operators are a lot more complicated than older operators. Most of the newer style operators do offer a door bell style of button that works with their operators though so you'll just have to find the newer type of buttons that will work with your operator.

I saw some buttons that are said to be compatible.  I ordered them and will be installing in the next few days.  Thanks.